when i use the router link i have this error : chunk-PXXAIYND.js?v=9a9432b3:48 ERROR NullInjectorError: R3InjectorError(Standalone[_AppComponent])[ActivatedRoute -> ActivatedRoute -> ActivatedRoute]: NullInjectorError: No provider for ActivatedRoute! i try to injecte it correctly but still anabel to make it run , this is the code of the angulau prjct : import { Component ,OnInit} from '@angular/core'; import { ActivatedRoute, RouterModule } from '@angular/router'; import { WeatherService } from '../weather.service'; @Component({ selector: 'app-day', imports: [ActivatedRoute,WeatherService,RouterModule], templateUrl: './day.component.html', styleUrl: './day.component.css' }) export class DayComponent implements OnInit{ city: string = ''; date: string = ''; hourlyData: any[] = []; constructor( private route: ActivatedRoute, private weatherService: WeatherService ) {} ngOnInit() { this.route.params.subscribe((params) => { this.city = params['city']; this.date = params['date']; console.log(`City: ${this.city}, Date: ${this.date}`); this.getHourlyWeather(); }); } getHourlyWeather() { this.weatherService.getWeather(this.city).subscribe({ next: (data) => { console.log('API Response:', data); // Log the data to inspect the structure const day = data.forecast.forecastday.find((d: any) => d.date === this.date); if (day && day.hour && day.hour.length > 0) { this.hourlyData = day.hour; // Populate hourlyData with hourly forecast } else { console.error('No hourly data found for this date.'); this.hourlyData = []; // Set to empty array if no data is found } }, error: (err) => { console.error('Error fetching hourly data:', err); }, }); } weather.component.html <button class="btn btn-secondary" [routerLink]="['/day', day.city, day.date]">Voir Plus</button> weather.service.ts : import { Injectable } from '@angular/core'; import { Observable } from 'rxjs'; import { HttpClient } from '@angular/common/http'; @Injectable({ providedIn: 'root' }) export class WeatherService { private apiKey = ''; private apiUrl = '' ; constructor(private http: HttpClient) {} getWeather(city: string, days: number = 7): Observable<any> { const url = `${this.apiUrl}?key=${this.apiKey}&q=${city}&days=${days}`; console.log('API Request URL:', url); return this.http.get(url); } } app.module.ts : import { NgModule } from '@angular/core'; import { AppComponent } from './app.component'; import { BrowserModule } from '@angular/platform-browser'; import {provideHttpClient } from '@angular/common/http'; import { RouterModule, Routes } from '@angular/router'; import { DayComponent } from './day/day.component'; import { WeatherComponent } from './weather/weather.component'; const routes: Routes = [ { path: '', component: WeatherComponent }, { path: 'day/:city/:date', component: DayComponent }, ]; @NgModule({ declarations: [ AppComponent ], imports: [ BrowserModule ,RouterModule.forRoot(routes),DayComponent,WeatherComponent ], providers: [provideHttpClient() ], bootstrap: [AppComponent] }) export class AppModule {} Continue reading...